Our objective was to determine how Picea glauca (Moench) Voss trees on the Yukon plateau developed over time through the analysis of tree trunks. Our general null hypothesis was: if year-to-year climatic variation is the primary factor determining the magnitude of yearly radial growth, then within-tree and between-tree dendrochronological comparisons of annual ring width should generate Pearson product-moment correlation coefficients (PMCCs) near 1 for similar timberline position and, plausibly, lower PMCCs when comparing trees at different positions. Ring widths of nine trees were sequentially measured across the four cardinal direction radii of disks taken from 1 m trunk intervals. PMCCs of those radial series were calculated at [...]
